CN105319077B - A kind of wheel unloading experimental rig and test method - Google Patents

A kind of wheel unloading experimental rig and test method Download PDF

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Publication number
CN105319077B
CN105319077B CN201510884421.XA CN201510884421A CN105319077B CN 105319077 B CN105319077 B CN 105319077B CN 201510884421 A CN201510884421 A CN 201510884421A CN 105319077 B CN105319077 B CN 105319077B
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China
Prior art keywords
wheel
force transferring
support
experimental rig
wheel unloading
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CN105319077A (en
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魏晓斌
陈晓
雷新红
柳兴
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CSR Zhuzhou Electric Locomotive Co Ltd
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CSR Zhuzhou Electric Locomotive Co Ltd
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Abstract

The invention discloses a kind of wheel unloading experimental rig and test methods.The wheel unloading experimental rig includes pedestal, base-mounted support member, and the force transferring part that rotatable with respect to support member can be moved up and down, and the top of the force transferring part is equipped with pressure sensor by transition tool;The force transferring part is equipped with the structure convenient for driving force transferring part rotation.The experimental rig of present invention equivalent implementation wheel in such a way that newly-designed tooling raises steering framing wheel to axle box is raised, while being equipped with pressure sensor in tooling and being realized the heavy measurement of wheel, and experiment is convenient, at low cost.

Description

A kind of wheel unloading experimental rig and test method
Technical field
The present invention relates to a kind of wheel unloading experimental rig and test methods, belong to urban rail transit vehicles experiment neck Domain.
Background technology
It is required according to rail vehicle correlation test standard, urban rail transit vehicles need to carry out wheel unloading experiment, lead to The off-load of test wheel is crossed to verify the Derailment Safety energy of bogie.Experiment is specific as shown in Figure 1, vehicle single wheel is lifted Operating mode of the high certain altitude simulating vehicle on distortion track, measures wheel vertical load.
Current wheel unloading experiment is all raising as shown in Fig. 2, by the title below cushion block by cushion block realization wheel Platform measures the vertical load of wheel.This mode needs car lifting J-Horner to raise vehicle, and wheel falls on cushion block or matched with tractor It closes and vehicle is pushed into track, realization process needs to expend a large amount of human and material resources resource, as shown in Fig. 2, cushion block tooling needs to lead to It crosses fastening bolt to be loaded on track, the process that is loaded is time-consuming and laborious.Not secured enough the or cushion block height if fastening bolt is loaded Excessively high when causing ramp angles excessive, tractor pushes and easily causes tooling there are larger impact force when tooling on vehicle and slide It moves and is detached from weighting platform region, experiment is caused to re-start.Simultaneously because the tooling that is loaded is in weighting platform region, tractor pushes on vehicle Existing impact force can be transmitted to the weighting platform below track by track when tooling, and symmetry bench has damage.
CN201110415826.0 discloses a kind of prediction technique of rate of wheel load reduction, is based on track checking car acquisition trajectory number It is emulated according in conjunction with professional software ADAMS/RAIL, it is of high cost, it is complicated for operation.
Invention content
The present invention is intended to provide a kind of wheel unloading experimental rig and test method, the experimental rig and test method pass through Newly-designed tooling raises steering framing wheel raising to the mode equivalent implementation wheel of axle box, while pressure is equipped in tooling Force snesor realizes the measurement of wheel weight, and experiment is convenient, at low cost.
To achieve the goals above, the technical solution adopted in the present invention is:
A kind of wheel unloading experimental rig, is structurally characterized in that, including pedestal, base-mounted support member, and The top of the force transferring part that rotatable with respect to support member can be moved up and down, the force transferring part is passed by transition tool equipped with pressure Sensor;The force transferring part is equipped with the structure convenient for driving force transferring part rotation.
As a result, by rotating force transferring part, you can realize rising or falling for pressure sensor, wheel weight is carried out to facilitate Off-load is tested.
According to an embodiment of the invention, further optimization can also be made to the present invention, below the skill to be formed after optimization Art scheme:
Preferably, it is screw nut cooperation or feed screw nut cooperation between the support member and force transferring part.It is this to match Conjunction mode so that degree of regulation is high, and adjustment process is controllable.
According to an embodiment of the invention, the threaded hole being vertically arranged, the force transferring part tool are provided in the support member There is the external thread section being partially disposed in the threaded hole.Preferably, the support member is support pipe and is fixed on support pipe The fixing nut on top, the force transferring part are bolt;The spiro rod section of the bolt and fixing nut screw-thread fit.
Preferably, equipped with the locking screw by force transferring part locking on the supporting member on the end of thread of the force transferring part It is female.It can be locked after force transferring part is adjusted in place as a result, and keep required state.
In order to improve the rigidity of support pipe, the support pipe side wall is equipped with gusset.
It is equipped with force transferring part in any position of its stroke and support member between the support member and force transferring part The locking device of locking.
Eaily regulative mode is one kind, and the structure of the driving force transferring part rotation is to be secured transverse to power transmission portion Rocking bar on part.Rocking bar transverse shifting, operating personnel can operate in bolt on the outside of axle box, increase the same of the arm of force When can interfere to avoid with wheel.It is of course also possible to which multiple planes pulled convenient for spanner are arranged in force transferring part outer wall.
Preferably, the induction point of the pressure sensor is located at axle box cross central line and shaft end when supporting axle box The point of intersection of center vertical plane.Sensor sensing point can by with wheel web identity distance from and axle box indulge end face Distance positioning.
Based on the same inventive concept, wheel weight is carried out using above-mentioned wheel unloading experimental rig the present invention also provides a kind of The method of off-load experiment comprising following steps:
a)The wheel unloading experimental rig is placed in bogie of car wheel to immediately below axle box, rotating force transferring part It is denoted as zero when pressure sensor being made to be contacted with axle box, measures the spacing h of rail level and axle box bottom plane at this time0
b)Padded height h is needed according to wheel unloading test programx, rotate force transferring part and make wheel unloading experiment dress It sets and axle box bottom plane is raised to axle box bottom plane and rail level spacing reaches h0+hx, record at this time steering framing wheel to axis The numerical value of babinet lower pressure sensor, you can obtain vehicle and raising height hxWheel weight under state, vehicle wheel unloading Rate calculation formula is Δ Q1/Q=(Q-Q1)/Q, Δ Q2/Q=(Q-Q2)/Q;Wherein:Δ Q1, Δ Q2 are respectively that track distortion causes Two wheel pair wheel unloading value;Q is wheel to the two wheel load average values in left and right, Q=(Q1+Q2)/2;Q1, Q2 are respectively two A wheel real load, is directly obtained by the pressure sensor.
According to an embodiment of the invention, the support member is support pipe and the fixation spiral shell for being fixed on support pipe top Mother, the force transferring part are bolt;The spiro rod section of the bolt and fixing nut screw-thread fit, and filled on the spiro rod section of bolt There is the locking nut on fixed support part by bolt locking, axle box bottom plane is raised into h in rotation force transferring partx Afterwards, nut is screwed down and is locked.
By above structure, the rate of wheel load reduction static test of existing technical literature introduction is all to pass through sensor Directly measure wheel weight.It is in orbit one is being installed by keel that there are two types of patterns on raising mode, and vehicle is set In measuring wheel vertical load by title group below track on keel;One is sensor is installed below track, pass through Track is risen to level altitude by hydraulic jack, and vehicle is being pushed to track, is being hung down by the transducers measure wheel below track To load.
Essence by the discovery wheel unloading experiment that studies for a long period of time is exactly to measure wheel of vehicle in side raised condition Under wheel weight assess safety, it is intermediate nonelastic since steering framing wheel is connected by shaft to axle box by bearing and wheel Body exists, and axle box is also elevated corresponding height while wheel is raised.The present invention realizes that bolt rotation changes using rocking bar Test tool height(And it is positioned by nut check)The mode raised of test tool, by raising steering framing wheel to axis The mode equivalent implementation wheel of babinet is raised, and measuring axle box vertical load using pressure sensor obtains wheel weight, this side Method is easy to operate, and manpower and materials expend few.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention raises steering framing wheel by newly-designed tooling It to raising for the mode equivalent implementation wheel of axle box, solves in old scheme that padded tooling is difficult to install well, is easy to slide The problem of symmetry bench causes damage during dynamic and experiment.Tooling of the present invention with Fast Installation and can raise axle box simultaneously, no It needs tractor to drag vehicle, improves test efficiency, reduce experimentation cost.
Below in conjunction with drawings and examples, the present invention is further elaborated.
Description of the drawings
Fig. 1 is the schematic diagram of existing wheel unloading experiment;
Fig. 2 is the structural schematic diagram of existing wheel unloading experimental rig;
Fig. 3 is A-A sectional views of Fig. 2;
Fig. 4 is the structure principle chart of one embodiment of the invention;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the vertical view of Fig. 4;
Fig. 7 is wheel unloading force analysis schematic diagram.
In figure
1- fastening bolts;2- mounting blocks;3- skewbacks;4- keels;5- fixing nuts;6- support pipes;7- rocking bars;8- muscle Plate;9- pedestals;10- wheels pair;11- pressure sensors;12- transition tools;13- bolts;14- locking nuts;4 right side of h1- axis The padded height of wheel;The padded height of 3 right side wheels of h2- axis;The padded height of 2 right side wheels of h3- axis;L1- bogie axles Away from;L- bogie pivot centers;It is distorted between T- bogies;It is distorted between T1- bogie axles;1 left side wheel of 11- axis;1 right side of 12- axis Wheel;2 left side wheel of 21- axis;2 right side wheels of 22- axis;3 left side wheel of 31- axis;3 right side wheels of 32- axis;4 left side vehicle of 41- axis Wheel;4 right side wheels of 42- axis.
Specific implementation mode
A kind of wheel unloading experimental rig, as shown in figure 3, pressure sensor 11 passes through sensing for measuring vertical load Device installation transition tool 12 is connected with bolt 13.Bolt is rotated by the rotation of rocking bar 7 in locking nut 14, fixing nut 5 Realize the variation of tooling height.Branch holds round 6 and welds together with self-control round nut pipe, is used to support upper load, gusset 8 is used for Reinforce the rigidity of support pipe, pedestal 9 makes tooling smoothly be positioned over ground or other mounting surfaces.Specific implementation vehicle wheel subtracts again The process for carrying experiment is as follows, and tooling is placed in bogie of car wheel to immediately below axle box, revolving bolt by rocking bar 7 first Turn, i.e. pressure sensor stress has display to be denoted as zero after pressure sensor is contacted with axle box.Measure rail level and axis at this time The spacing h of bottom of box plane0, padded height h is needed according to wheel unloading test programx, rotated axle box by rocking bar 7 Body bottom plane, which is raised, makes it reach h with rail level spacing0+hx, while nut 4 being screwed down and is locked.Each at this time turn of record To frame wheel to the numerical value of axle box lower pressure sensor, so that it may to obtain wheel weight of the vehicle under raised condition, specifically by Vehicle rate of wheel load reduction calculation formula:
ΔQ1/Q=(Q-Q1)/Q、ΔQ2/Q=(Q-Q2)/Q
Wherein:Δ Q1, Δ Q2 are respectively the wheel unloading value of two wheels pair caused by track distortion;
Q is wheel to the two wheel load average values in left and right, Q=(Q1+Q2)/2;
Q1, Q2 are respectively two wheel real loads, and pressure sensor through the invention directly obtains.
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the present invention, without For limiting the scope of the invention, after having read the present invention, various equivalent forms of the those skilled in the art to the present invention Modification each fall within the application range as defined in the appended claims.

Claims (18)

1. a kind of wheel unloading experimental rig, which is characterized in that it is placed in bogie of car wheel to axle box underface, the wheel Weight off-load experimental rig includes pedestal(9), it is mounted in pedestal(9)On support member, and can it is rotatable with respect to support member on The force transferring part of lower movement, the top of the force transferring part pass through transition tool(12)Equipped with pressure sensor(11);The power transmission Component is equipped with the structure convenient for driving force transferring part rotation;The pressure sensor(11)Induction point when supporting axle box position In the point of intersection of axle box cross central line and shaft end center vertical plane.
2. wheel unloading experimental rig according to claim 1, which is characterized in that the support member and force transferring part it Between for screw nut cooperation or feed screw nut cooperation.
3. wheel unloading experimental rig according to claim 2, which is characterized in that be provided with vertical cloth in the support member The threaded hole set, the force transferring part have the external thread section being partially disposed in the threaded hole.
4. wheel unloading experimental rig according to claim 3, which is characterized in that the support member is support pipe (6)Be fixed on support pipe(6)The fixing nut on top(5), the force transferring part is bolt(13);The bolt(13)'s Spiro rod section and fixing nut(5)Screw-thread fit.
5. wheel unloading experimental rig according to claim 3, which is characterized in that filled on the end of thread of the force transferring part There is the locking nut on the supporting member by force transferring part locking(14).
6. wheel unloading experimental rig according to claim 3, which is characterized in that the support pipe(6)It is set on side wall There is gusset(8).
7. the wheel unloading experimental rig according to any one of claim 1-4, which is characterized in that the support member and The locking device in any position of its stroke and support member locking by force transferring part is equipped between force transferring part.
8. the wheel unloading experimental rig according to any one of claim 1-6, which is characterized in that the driving power transmission portion The structure of part rotation is the rocking bar being secured transverse on force transferring part(7).
9. a kind of method carrying out wheel unloading experiment using wheel unloading experimental rig, which is characterized in that the wheel unloading Experimental rig includes pedestal(9), it is mounted in pedestal(9)On support member, and rotatable with respect to support member can move up and down Force transferring part, the top of the force transferring part passes through transition tool(12)Equipped with pressure sensor(11);The force transferring part is set There is the structure convenient for driving force transferring part rotation;Include the following steps:
The wheel unloading experimental rig is placed in bogie of car wheel to immediately below axle box, rotation force transferring part makes pressure Sensor is denoted as zero when being contacted with axle box, measure the spacing h of rail level and axle box bottom plane at this time0
Padded height h is needed according to wheel unloading test programx, rotate force transferring part and make wheel unloading experimental rig by axis Bottom of box plane is raised to axle box bottom plane and reaches h with rail level spacing0+hx, record at this time steering framing wheel under axle box The numerical value of pressure sensor, you can obtain vehicle and raising height hxWheel weight under state, vehicle rate of wheel load reduction calculate Formula is Δ Q1/Q=(Q-Q1)/Q, Δ Q2/Q=(Q-Q2)/Q;Wherein:Δ Q1, Δ Q2 are respectively two caused by track distortion The wheel unloading value of wheel pair;Q is wheel to the two wheel load average values in left and right, Q=(Q1+Q2)/2;Q1, Q2 are respectively two wheels Real load is directly obtained by the pressure sensor.
10. the method for carrying out wheel unloading experiment according to claim 9, which is characterized in that the support member is support Pipe(6)Be fixed on support pipe(6)The fixing nut on top(5), the force transferring part is bolt(13);The bolt (13)Spiro rod section and fixing nut(5)Screw-thread fit, and in bolt(13)Spiro rod section on equipped with by bolt(13)Locking exists Locking nut on fixed support part(14), axle box bottom plane is raised into h in rotation force transferring partxAfterwards, by nut(4) It is screwed down and is locked.
11. the method according to claim 9 for carrying out wheel unloading experiment, which is characterized in that the support member and biography It is screw nut cooperation or feed screw nut cooperation between power component.
12. the method according to claim 11 for carrying out wheel unloading experiment, which is characterized in that opened in the support member There are the threaded hole being vertically arranged, the force transferring part that there is the external thread section being partially disposed in the threaded hole.
13. the method according to claim 12 for carrying out wheel unloading experiment, which is characterized in that the support member is branch Hold round pipe(6)Be fixed on support pipe(6)The fixing nut on top(5), the force transferring part is bolt(13);The bolt (13)Spiro rod section and fixing nut(5)Screw-thread fit.
14. the method according to claim 12 for carrying out wheel unloading experiment, which is characterized in that the spiral shell of the force transferring part Equipped with the locking nut by force transferring part locking on the supporting member on line end(14).
15. the method according to claim 10 for carrying out wheel unloading experiment, which is characterized in that the support pipe(6) Side wall is equipped with gusset(8).
16. the method for the progress wheel unloading experiment according to any one of claim 9-15, which is characterized in that the branch The locking device in any position of its stroke and support member locking by force transferring part is equipped between support part part and force transferring part.
17. the method for the progress wheel unloading experiment according to any one of claim 9-15, which is characterized in that the drive The structure of dynamic force transferring part rotation is the rocking bar being secured transverse on force transferring part(7).
18. the method for the progress wheel unloading experiment according to any one of claim 9-15, which is characterized in that the pressure Force snesor(11)Induction point when supporting axle box positioned at the intersection point of axle box cross central line and shaft end center vertical plane Place.
CN201510884421.XA 2015-12-03 2015-12-03 A kind of wheel unloading experimental rig and test method Active CN105319077B (en)

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Publication number Priority date Publication date Assignee Title
CN106768236B (en) * 2016-11-30 2019-06-18 中车青岛四方车辆研究所有限公司 Spring and rate of wheel load reduction test macro are adjusted in rail vehicle weighing

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* Cited by examiner, † Cited by third party
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US3362351A (en) * 1965-09-03 1968-01-09 Robertson Thomas Re-railing apparatus for railway vehicles
US4276793A (en) * 1979-07-05 1981-07-07 Wirtz Arthur T Method and apparatus for truing a metal wheel, especially of a railroad locomotive or other rolling stock
EP2161177B1 (en) * 2008-09-09 2011-11-02 EuroMaint AB A lifting device
CN203005462U (en) * 2012-12-24 2013-06-19 南车青岛四方机车车辆股份有限公司 Portable derailer
CN103175701B (en) * 2013-03-04 2015-11-18 南车南京浦镇车辆有限公司 Bogie balance test method
CN104458291B (en) * 2014-12-09 2017-02-22 南车株洲电力机车有限公司 Wheel jack-up device for rail vehicle

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